铁道科学与工程学报2016，Vol.13Issue(5)：871-875,5.
桥墩纵向水平刚度对简支梁桥桥上无缝线路的影响分析
Analyzing the i mpact of longitudinal rigidity of piers on CWR track on simply supported girder bridge
摘要
Abstract
The longitudinal rigidity of piers is a key parameter in the design of the bridge and CWR.The longitu-dinal additional force,relative displacement between bridge and rail,breaking joint of CWR rails depend on the longitudinal rigidity of piers to a great extent.The commonly-used simply-supported girder bridge was used as an example in this study.An integrated track -bridge -piers calculation model of CWR on bridge was estab-lished according to the finite element method and the theory of interaction between rail and bridge.The Impacts of longitudinal rigidity of piers on the rail expansion and contraction forces,bending force,braking force and rail breaking joint were analyzed.Results show that with increasing longitudinal rigidity of piers,the rail expansion and contraction forces and bending force increase,whereas the braking force,relative displacement between bridge and rail,and breaking joint of rail decrease.The greater the longitudinal rigidity of piers is,the safer it will be when calculating the rail expansion and contraction forces and bending force.The less the longitudinal ri-gidity of piers is,the safer it will be when calculating the braking force and breaking joint of rail.关键词
桥上无缝线路/墩台刚度/纵向力/位移Key words
continuous welded rail on bridge/rigidity of pier and abutment/longitudinal force/displacement分类
交通工程引用本文复制引用
徐浩,林红松,颜华..桥墩纵向水平刚度对简支梁桥桥上无缝线路的影响分析[J].铁道科学与工程学报,2016,13(5):871-875,5.基金项目
国家自然科学基金资助项目 （）
